一旦这条铁路完工，我们就能将在一天之内往返北京的翻译：Once the railway was completed, we will be able to travel in a day in Beijing 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Once the railway was completed we will be able in one day from Beijing

Once the railway was completed, we will be able to travel in a day in Beijing

Once this railroad finishes, we can go and return Beijing within one day

Once the railway was completed, we will be able to travel to and from a day in Beijing

Once the railway was completed, we will be able to travel in a day in Beijing